{"id":"001064739","type":"book","title":"An 8th-century written sources on ships and navigation: the Cosmography of Aethicus Ister","publisher":"The Viking Ship Museum, Roskilde","publisher-place":"Roskilde","pages":"220-234","container-title":"Wulfstan's voyage : The Baltic Sea region in the early Viking Age as seen from shipboard","author":[{"family":"Wood","given":"Ian"}],"issued":{"raw":"2009"}}